Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Aston - Stealth | Audio-Technica - BP40 |
|---|---|---|
| Max SPL | 144 dB | 148 dB |
Between the Stealth and BP40, the Stealth comes out ahead in several specs, while the BP40 wins on max spl. Overall, the Stealth scores 61.9 and the BP40 scores 65.7 on our Mars Score.
Which should you buy?
The BP40 edges ahead on the Mars Score (61.9 vs 65.7), but the 3.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Stealth does not pull ahead on any single popular-comparison spec — its strengths sit in the spec-table groups rather than the headline advantages.
Pick the BP40 if you care most about max spl. Its strongest claims are max spl. The single most decisive one: Max SPL — 2.78% more. 148 dB vs 144 dB.
Both ship with comparable type, connection, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Aston - Stealth or Audio-Technica - BP40?
Audio-Technica - BP40 leads the current Mars Score by 3.8 points.The more useful decision is the trade-off behind that result: compare max spl against the way you will actually use the product.
Choose Aston - Stealth if…
Aston - Stealth does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Audio-Technica - BP40 if…
Audio-Technica - BP40 has the measurable edge on max spl db.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Aston - Stealth wins
- No decisive advantages.
Why Audio-Technica - BP40 wins
- ▲Max SPL — 2.78% more. 148 dB vs 144 dB.
Spec comparison
Spec
| Spec | Aston - Stealth | Audio-Technica - BP40 |
|---|---|---|
| Type | Dynamic | Dynamic |
| Polar pattern | Cardioid | Hypercardioid |
| Frequency response | 30Hz–20kHz | 50Hz–16kHz |
| Max SPL | 144 dB | 148 dBlead |
Connectivity
| Spec | Aston - Stealth | Audio-Technica - BP40 |
|---|---|---|
| Connection | XLR | XLR |
| Headphone out | false | false |